As long as you've surveilled this turn, Darkblade Agent has deathtouch and "Whenever this creature deals combat damage to a player, you draw a card."

Flying Menace (This creature can't be blocked except by two or more creatures.) Whenever you surveil, put a +1/+1 counter on Dimir Spybug.

Flying, trample Pay 2 life: Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Etrata, the Silencer can't be blocked. Whenever Etrata deals combat damage to a player, exile target creature that player controls and put a hit counter on that card. That player loses the game if they own three or more exiled cards with hit counters on them. Etrata's owner shuffles Etrata into their library.

When Lazav, the Multifarious enters the battlefield, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) {X}: Lazav, the Multifarious becomes a copy of target creature card in your graveyard with mana value X, except its name is Lazav, the Multifarious, it's legendary in addition to its other types, and it has this ability.

Flying When Narcomoeba is put into your graveyard from your library, you may put it onto the battlefield.

Counter target spell. Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)

Dimir Guildgate enters the battlefield tapped. {T}: Add {U} or {B}.

({T}: Add {U}.)

Creeping Chill deals 3 damage to each opponent and you gain 3 life. When Creeping Chill is put into your graveyard from your library, you may exile it. If you do, Creeping Chill deals 3 damage to each opponent and you gain 3 life.

All creatures get -1/-1 until end of turn. Surveil 2. (Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Target opponent reveals their hand. You choose a nonland card from that player's graveyard or hand and exile it.

Flying (This creature can't be blocked except by creatures with flying or reach.)

Flash (You may cast this spell any time you could cast an instant.) Enchant creature When Capture Sphere enters the battlefield, tap enchanted creature. Enchanted creature doesn't untap during its controller's untap step.

Choose a creature card with mana value 1 in your graveyard, then do the same for creature cards with mana value 2 and 3. Return those cards to the battlefield.